Industrial Water Bath Heaters

Industrial Bath Heater

Exotherm designs and manufactures industrial bath heaters for a variety of applications. Among these custom industrial process bath heaters, Exotherm offers both water bath and steam bath heaters. Below are detailed descriptions of design features, applications, and operation.


The process coils and the fire tubes are immersed in a liquid of vapor bath.  As the unit is fired, heat is transferred from the fire tube to the process media bath and then to the process fluid.  This indirect method of heating provides safe, uniform, and regulated heating of the process fluid.

The heater shell design is based on the type of service, ranging from atmospheric pressure up to several hundred PSI.  The process flow coils are designed to handle working pressures up to 10,000 psi.

Fast response in heat output from the fire tube meets the heating requirement of the process fluid without any baffling that to restrict heat flow.

The forced draft burner firing rate is controlled by a PID loop control signal.  This signal manipulates the burner firing rate based on the temperature feedback signal from at temperature element installed in the heater bath.


Applications that require a way to prevent fluid damage or coking with limited or controlled heat flux are ideal for Exotherm's range of industrial bath heaters.  Exotherm offers a safer and more compact industrial bath heater with our unique forced draft design that incorporating smaller fire tubes. Exotherm offers water bath heaters and steam bath heaters.

Process Bath Heaters

  • Compact Design – Utilizing Forced Draft Burner Technology (Smaller Fire Tubes)
  • Safe Operation – NFPA Compliant Burner Management System. FM, UL, CSA, SIL Compliance
  • Custom Features – Exotherm has the experience and expertise to meet unique customer specifications
  • Designed Per API-12K, ASME Section VIII or ANSI B31.1 Code
  • Process Fluid Pressures up to 10,000 PSI.
  • Removable Fire Tube and Process Coils
  • Controlled Flux Rates
Indirect Water Bath Heaters

Water Bath Heaters

Ideal for applications that require lower flux rates to prevent fluid damage or coking

Read More
Industrial Steam Bath Heaters

Steam Bath Heaters

Ideal for applications that require high heat transfer rates with limited process tube surface areas.

Read More
Click here to Build Your Heater or call us today at 1.866.762.9041